HELP! Advice?!

Okay so I started my period on May 9, I was supposed start May 11th. I spotted for the first two days, then got a heavy period for a day, then spotted for a few days. I never spot and usually have my periods right on time. Now, I’m on cycle day 10 and in DRY like, no cm at all and I’m never usually like this. I usually have white/yellowish cm leading up to ovulation and sagger until my period. Has this happened to anyone before? Should I be worried or is this normal?